Cass storm history

Snow, mostly light, combined with northwest winds which increased to 25 to 35 mph. The strong winds and snow caused widespread blowing and drifting snow and poor visibilities beginning on 2/14. The visibilities occasionally dropped to near zero for an hour or two late in the morn…

A period of moderate to heavy snow caused poor visiblities and slick roads that resulted in a vehicle crash which killed a 2-year-old boy south of Plattsmouth on Highway 75. Snowfall totals in the area were in the 2 to 4 inch range.

Strong winds blew down a 100 foot tall cottonwood tree. The two to three feet diameter upper limbs hit a tent that two people were camping in. A 58 year old male was killed and a 31 year old female was injured. (M58O)

This is for flooding along the Missouri River. The river gage at Plattsmouth, operated by the Army Corps of Engineers, peaked at 40.62 feet at 6 am on March 16th. Minor flood stage is 26 feet, moderate flood stage is 32 feet while major flood stage is 35 feet. Preliminary this pe…

Personal weather station measured wind gust of 62 mph near Elmwood, NE.

Personal weather station measured wind gust of 61 mph in Louisville, NE.

Trained spotter report of six to eight inch in diameter tree branches down and blocking roads in Murray, NE. Winds were estimated at 60-65 mph.

KPMV AWOS measured heat index up to 112 degrees. Personal weather stations and mesonets measured heat index of 116, 118 and 119 degrees.

KPMV AWOS measured heat index up to 112 degrees with a minimum heat index of 72 degrees through the period. Personal weather station measured heat index of 117, 120 and 124 degrees.

Emergency management report of power lines down. Damage is from the outflow boundary of a thunderstorm with estimated wind speeds of 60-65 mph. Time estimated via radar.

KPMV AWOS measured heat index up to 104 degrees with a minimum heat index of 78 degrees through the period. Personal weather station measured heat index of 111 degrees.

At approximately 6:20 PM CST on Thursday, April 17, video evidence supports the development of a tornado near 286th St and McKelvie Road that lasted for approximately 2 minutes. No damage was reported as it passed through open fields, supporting an EF-U rating.

Emergency manager report of hail measured up to 1.75 in diameter.

Emergency manager report of hail measured up to 2.75 in diameter.

Personal weather station measured wind gust of 71 mph.

Public report of hail estimated up to 1 in diameter.

Trained spotter report of hail estimated up to 1 in diameter.

Public report of hail measured up to 1.25 in diameter.

Public report of hail estimated up to 1 in diameter. Report received via mPING.

Public report of hail estimated up to 1 in diameter. Report received via mPING.

Public report of hail estimated up to 1.25 in diameter. Report received via mPING.

Trained spotter report of hail measured up to 2.00 in diameter. Delayed report with the time estimated from radar.

Public report of hail estimated up to 1.50 in diameter. Report received via mPING.

Public report of hail measured up to 1.00 in diameter.

Public report of hail measured up to 1.25 in diameter.

Public report of hail estimated up to 1 in diameter. Report received via mPING.

I-80 closed between Waverly and Gretna due to blizzard conditions. Snowfall amounts generally in the 2 to 5 range with wind gusts measured up to 77 mph.

Personal weather station measured gust of 77 mph and 72 mph.

Mesonet measured wind gust of 61 mph.

Emergency manager report of a tree down, blocking the southbound lanes at the intersection of Highway 66 and 42nd street. Report also included blown signage along Highway 66. Estimated wind gust of 65 mph.

General snowfall amounts of 3 to 4 inches throughout the county. Interstate-80 closed from Gretna to Lincoln at 21:50 CST. Wind gusts up to 60 mph.

KPMV measured sustained wind gusts of at least 40 mph for over an hour, gusting up to 51 mph.

Wind chill got as low as -32 in the county.

Several hours of high winds were observed during the afternoon hours. Though there were no direct measurements of severe-level wind gusts, emergency management reported powerlines down across Plattsmouth resulting in sporadic power outages, consistent with 65 miles per hour wind …

A trained spotter reported dime to quarter sized hail in Plattsmouth.

Afternoon highs in the low 100s and dew points in the mid 70s brought dangerous heat indices to the area for two consecutive afternoons. On the 25th, the Plattsmouth AWOS recorded a heat index of 111 degrees. The following afternoon, a mesonet station 2 miles east of Plattsmouth …

A mesonet station recorded a 59 miles per hour wind gust.

An 89 miles per hour wind gust was recorded by a mesonet station.

The 911 Call Center relayed a report of a large dust cloud on the leading edge of the thunderstorm with an embedded gustnado. There was widespread tree damage in the area as well.

A mesonet station recorded a 59 miles per hour wind gust.

A mesonet station recorded a 58 miles per hour wind gust.

A mesonet station recorded a 66 miles per hour wind gust.

Heat indices up to 112 impacted portions of the county for a few hours during the afternoon.

Amateur radio reported approximately half a foot of water running over country roads northeast of Murdock. Most of this was runoff from nearby agricultural fields.

Water was reported running over the road at the intersection of Rock Creek Road and Highway 6 by emergency management. Emergency management relayed reports of multiple people trapped in homes from quickly rising water in the Horseshoe Lake area. Rock creek also remained above flo…

This is a continuation of river flooding from the end of June. River levels crested along this stretch of the Missouri at the end of June, hence flood waters were receding by this time. As such, the greatest impacts were felt in June (and discussed in the June entry for StormData…